<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>系统调试</title>
</head>
<style>
    html{
        width:100%;
        height:100%;
    }
    body{
        width:100%;
        height:100%;
        margin:0;
        background: linear-gradient(#187fdc,#27b7e9);
    }
    div{
        width:100%;
        height:100%;
        background:url(/img/system.jpg) no-repeat center;
        background-size: contain;
    }
</style>
<body>
<div>
    
</div>
</body>
</html>